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Compact TFX power supply unit with 80mm cooling fan and multiple connectors

myVolts

myVolts TFX 420W Power Supply for Bestec TFX0250 Rev X2 X3 X4

SKU CH-SSSZ-JEHBS

A new 420 watt TFX power supply replaces 200, 250, 300 or 350 watt units in slimline PCs and includes 20+4 pin motherboard, 4-pin CPU, Molex, floppy and SATA connectors

  • TypeAT
  • 420 W output replaces 200–350 W units
  • Fits Bestec TFX0250 Rev X2 X3 X4
  • 20+4 pin, 4-pin CPU, 2× Molex, floppy, 2× SATA
  • 80 mm double-ball-bearing fan for cooling
  • 100–240 V input works worldwide

Bestec TFX0250 Replacement PSU

This 420 W TFX power supply replaces Bestec TFX0250P5WB and TFX0250D5W units marked Rev X2, X3 or X4. It upgrades 200 W, 250 W, 300 W or 350 W originals in slimline and small-form-factor desktops. The unit delivers steady power for older PCs and new custom builds with a wide range of peripherals. Condition is new.

Check connector layout and case clearance

Verify that your motherboard uses a 20+4 pin main connector and a 4-pin CPU connector. Confirm the chassis accepts a TFX form-factor unit with an 80 mm double-ball-bearing fan. Ensure the 100–240 V input range matches your local mains supply. The PSU is type AT, not standard ATX.

Bundled cables cover legacy and modern drives

Included cables provide two Molex plugs, a floppy connector and two SATA power leads alongside the motherboard and CPU leads. This mix lets you power older IDE devices and current SATA storage without adapters. The 420 W rating supports more peripherals than the original 275 W Bestec unit.

Pluspunten

  • 420 W output replaces 200–350 W units
  • Fits Bestec TFX0250 Rev X2 X3 X4
  • 20+4 pin, 4-pin CPU, 2× Molex, floppy, 2× SATA
  • 80 mm double-ball-bearing fan for cooling
  • 100–240 V input works worldwide

Specificaties

TypeAT

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Does the box include all cables needed for a motherboard, CPU, two SATA drives and two Molex devices?

The unit ships with a 20+4 pin motherboard connector, a 4-pin CPU connector, two SATA connectors and two Molex connectors, plus a floppy connector.

Should I choose this 420 W model instead of the 250 W, 300 W or 320 W versions?

This 420 W unit replaces the 250 W, 300 W and 320 W Bestec TFX0250 models, giving more headroom for added components.

Will the 420 W rating run reliably on a 100 V supply?

The power supply accepts 100/240 V input and delivers a steady 420 W across that range, cooled by an 80 mm double ball-bearing fan.

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